|Proceedings of the Interdisciplinary Workshop on Vertical Radiometric Probing - Florance, E. T|
Rayleigh and Mie scattering, passive microwave radiometry, and linear and nonlinear inversion methods for inferring atmospheric thermal structure from satellite observations
Keywords: ATMOSPHERIC TEMPERATURE; SCATTERING FUNCTIONS; TEMPERATURE DISTRIBUTION; ATMOSPHERIC TEMPERATURE; MICROWAVE RADIOMETER; RAYLEIGH SCATTERING; SATELLITE OBSERVATION; CONFERENCES; INVERSIONS; MICROWAVE RADIOMETERS; MIE SCATTERING; NONLINEARITY; RADIOMETERS; RAYLEIGH SCATTERING; SATELLITE OBSERVATION
|An Integrated Low-Speed Performance and Noise Prediction Methodology for Subsonic Aircraft - Olson, E. D.|
An integrated methodology has been assembled to compute the engine performance, takeoff and landing trajectories, and community noise levels for a subsonic commercial aircraft. Where feasible, physics-based noise analysis methods have been used to make the results more applicable to newer, revolutionary designs and to allow for a more direct evaluation of new technologies. The methodology is intended to be used with approximation methods and risk analysis techniques to allow for the analysis of ...
Keywords: RAYLEIGH SCATTERING; LIGHT SCATTERING; TURBULENT FLOW; NEURAL NETS; PHOTOMULTIPLIER TUBES; SPECTRA; ANODES; FABRY-PEROT INTERFEROMETERS
|Efficient Multi-Dimensional Simulation of Quantum Confinement Effects in Advanced MOS Devices - Biegel, Bryan A.|
We investigate the density-gradient (DG) transport model for efficient multi-dimensional simulation of quantum confinement effects in advanced MOS devices. The formulation of the DG model is described as a quantum correction ot the classical drift-diffusion model. Quantum confinement effects are shown to be significant in sub-100nm MOSFETs. In thin-oxide MOS capacitors, quantum effects may reduce gate capacitance by 25% or more...
Keywords: AEROSOLS; MODIS (RADIOMETRY); OCEANS; TERRA SPACECRAFT; CLOUDS (METEOROLOGY); RAYLEIGH SCATTERING; COMPARISON
|Scaling Laws Applied to a Modal Formulation of the Aeroservoelastic Equations - Pototzky, Anthony S|
A method of scaling is described that easily converts the aeroelastic equations of motion of a full-sized aircraft into ones of a wind-tunnel model. To implement the method, a set of rules is provided for the conversion process involving matrix operations with scale factors. In addition, a technique for analytically incorporating a spring mounting system into the aeroelastic equations is also presented...
Keywords: RAYLEIGH SCATTERING; DENSITY MEASUREMENT; CONTINUOUS WAVE LASERS; LIGHT SCATTERING; TEST FACILITIES; OPTICAL FIBERS; PLUMES; PHOTONS
|Stride-Cycle Influences on Goal-Directed Head Movements Made During Walking - Peters, Brian T.|
Horizontal head movements were studied in six subjects as they made rapid horizontal gaze adjustments while walking. The aim of the present research was to determine if gait-cycle events alter the head movement response to a visual target acquisition task. Gaze shifts of approximately 40deg were elicited by a step change in the position of a visual target from a central location to a second location in the left or right horizontal periphery...
Keywords: IMAGING TECHNIQUES; INTERFEROMETRY; RAMAN SPECTRA; RAYLEIGH SCATTERING; FABRY-PEROT INTERFEROMETERS; SPECTROMETERS; TEMPERATURE MEASUREMENT
|Density fluctuations in fluids having an internal degree of freedom (Volume 72A) - Mountain, Raymond D.|
Journal of Research of the National Bureau of Standards
Keywords: Brillouin scattering; density fluctuations in liquids; Rayleigh scattering; spectral distribution of scattered light; structural relaxation; thermal relaxation; volume viscosity
|Combustion and flow modelling applied to the OMV VTE - Larosiliere, Louis M.|
A predictive tool for hypergolic bipropellant spray combustion and flow evolution in the OMV VTE (orbital maneuvering vehicle variable thrust engine) is described. It encompasses a computational technique for the gas phase governing equations, a discrete particle method for liquid bipropellant sprays, and constitutive models for combustion chemistry, interphase exchanges, and unlike impinging liquid hypergolic stream interactions...
Keywords: FLOW VELOCITY; TEMPERATURE MEASUREMENT; FLOW VISUALIZATION; MATHEMATICAL MODELS; RAYLEIGH SCATTERING; VELOCITY MEASUREMENT; FLOW DISTRIBUTION; FREE JETS; PRESSURE MEASUREMENT; SUPERSONIC FLOW
|Squeezing in a 2-D generalized oscillator - Castanos, Octavio|
A two-dimensional generalized oscillator with time-dependent parameters is considered to study the two-mode squeezing phenomena. Specific choices of the parameters are used to determine the dispersion matrix and analytic expressions, in terms of standard hermite polynomials, of the wavefunctions and photon distributions.
Keywords: ABSORPTION SPECTROSCOPY; AEROSOLS; BACKSCATTERING; FREQUENCY STABILITY; PSEUDONOISE; RAYLEIGH SCATTERING; ALUMINUM GALLIUM ARSENIDE LASERS; ATMOSPHERIC MOISTURE; ATMOSPHERIC SOUNDING; DIFFERENTIAL ABSORPTION LIDAR; HUMIDITY MEASUREMENT; LASER SPECTROSCOPY; RADAR MEASUREMENT; WATER VAPOR
|Thrust Augmentation Measurements Using a Pulse Detonation Engine Ejector - Santoro, Robert J.|
The present NASA GRC-funded three-year research project is focused on studying PDE driven ejectors applicable to a hybrid Pulse Detonation/Turbofan Engine. The objective of the study is to characterize the PDE-ejector thrust augmentation. A PDE-ejector system has been designed to provide critical experimental data for assessing the performance enhancements possible with this technology. Completed tasks include demonstration of a thrust stand for measuring average thrust for detonation tube multi...
Keywords: CLOUDS (METEOROLOGY); ALBEDO; OZONE; OPTICAL THICKNESS; TROPOSPHERE; ATMOSPHERIC COMPOSITION; ATMOSPHERIC MODELS; ULTRAVIOLET EMISSION; REFLECTANCE; MIE SCATTERING; RAYLEIGH SCATTERING; BACKSCATTERING; SATELLITE INSTRUMENTS; TOTAL OZONE MAPPING SPECTROMETER
|A Symposium on the Use of Symbolic Methods to Solve Algebraic and Geometric Problems Arising in Engineering - NON|
This is the final report on a Symposium on the Use of Symbolic Methods to Solve Algebraic and Geometric Problems Arising in Engineering, sponsored by the Ames Research Center of the National Aeronautics and Space Administration, and held at the NASA-Ames Research Center, Moffett Field, California, on January 15 and 16, 1987. Approximately eighty five engineers, mathematicians and computer scientists attended one or more of the eight sessions during this two day workshop...
Keywords: CONFERENCES; BRILLOUIN EFFECT; INJECTION LASERS; WIND TUNNEL TESTS; COMPUTATIONAL FLUID DYNAMICS; RAYLEIGH SCATTERING; LIGHT SCATTERING; YAG LASERS; MIE SCATTERING; TEMPERATURE MEASUREMENT; VELOCITY MEASUREMENT; PRESSURE MEASUREMENT; FLOW VISUALIZATION
|Single particle motions in liquids: Qualitative features of memory functions (Volume 78A) - Mountain, Raymond D.|
Journal of Research of the National Bureau of Standards
Keywords: Depolarized Rayleigh scattering; ideal gas; incoherent neutron scattering; infrared absorption; liquid state; memory function; projection operator; Raman scattering; time correlation function
|Search for Failed Clusters - Tannanbaum, H.|
We describe a search for a new type of object-large clouds of hot gas with no visible galaxies-which we call failed clusters of galaxies. We calculate the expected X-ray luminosity, temperature, and angular diameter of such objects as a function of total cloud mass and convert the results to expected X-ray fluxes from failed clusters at different redshifts. Using the Einstein Imaging Proportional Counter (IPC) database, we establish a strategy to search for candidate failed clusters...
Keywords: BRILLOUIN EFFECT; FLOW VELOCITY; LINE SHAPE; PRESSURE MEASUREMENT; CCD CAMERAS; RAYLEIGH SCATTERING; SPECTRAL LINE WIDTH; YAG LASERS; DOPPLER EFFECT; GAS FLOW; OPTICAL FILTERS; INJECTION LASERS; TEMPERATURE MEASUREMENT
|Energy consumption analysis of the Venus Deep Space Station (DSS-13) - Hayes, N. V|
This report continues the energy consumption analysis and verification study of the tracking stations of the Goldstone Deep Space Communications Complex, and presents an audit of the Venus Deep Space Station (DSS 13). Due to the non-continuous radioastronomy research and development operations at the station, estimations of energy usage were employed in the energy consumption simulation of both the 9-meter and 26-meter antenna buildings...
Keywords: FLOW DISTRIBUTION; PARTICLE SIZE DISTRIBUTION; RAYLEIGH SCATTERING; MASS SPECTROSCOPY; RAMAN SPECTRA; REENTRY; SPACE SHUTTLE ORBITERS; EXTRAPOLATION; FEASIBILITY ANALYSIS; FLUORESCENCE; LASER INDUCED FLUORESCENCE
|Thermal relaxation and brillouin scattering in liquids (Volume 70A) - Mountain, Raymond D.|
Journal of Research of the National Bureau of Standards
Keywords: Brillouin scattering; density fluctuations in liquids; light scattering in liquids; Rayleigh scattering; spectral distribution of scattered light; thermal relaxation; volume viscosity
|Computational Investigation of Tangential Slot Blowing on a Generic Chined Forebody - Agosta-Greenman, Roxana M.|
The effect of tangential slot blowing on the flowfield about a generic chined forebody at high angles of attack is investigated numerically using solutions of the thin-layer, Reynolds-averaged, Navier-Stokes equations. The effects of jet mass now ratios, angle of attack, and blowing slot location in the axial and circumferential directions are studied. The computed results compare well with available wind-tunnel experimental data...
Keywords: FLOW MEASUREMENT; LIGHT BEAMS; YAG LASERS; ULTRAVIOLET RADIATION; TEMPERATURE MEASUREMENT; DENSITY MEASUREMENT; VELOCITY MEASUREMENT; RAYLEIGH SCATTERING; AIR JETS; FABRY-PEROT INTERFEROMETERS; FREE ATMOSPHERE; HIGH SPEED
|Hypergolic oxidizer and fuel scrubber emissions - Parrish, Clyde F.|
Hypergolic fuels and oxidizer are emitted to the environment during fueling and deservicing shuttle and other spacecraft. Such emissions are difficult to measure due to the intermittent purge flow and to the presence of suspended scrubber liquor. A new method for emissions monitoring was introduced in a previous paper. This paper is a summary of the results of a one-year study of shuttle launch pads and orbiter processing facilities (OPF's) which proved that emissions can be determined from fiel...
Keywords: FLOW VELOCITY; ULTRAVIOLET RADIATION; UNSTEADY FLOW; GAS FLOW; LASER APPLICATIONS; RAYLEIGH SCATTERING; VELOCITY MEASUREMENT; DENSITY MEASUREMENT; HIGH SPEED; PULSED LASERS; TEMPERATURE MEASUREMENT
|Time-Resolved IR-Absorption Spectroscopy of Hot-Electron Dynamics in Satellite and Upper Conduction Bands in GaP - Cavicchia, M. A.|
The relaxation dynamics of hot electrons in the X6 and X7 satellite and upper conduction bands in GaP was directly measured by femtosecond UV-pump-IR-probe absorption spectroscopy. From a fit to the induced IR-absorption spectra the dominant scattering mechanism giving rise to the absorption at early delay times was determined to be intervalley scattering of electrons out of the X7 upper conduction-band valley...
Keywords: NEPTUNE ATMOSPHERE; PHOTOCHEMICAL REACTIONS; URANUS ATMOSPHERE; VOYAGER 2 SPACECRAFT; ATMOSPHERIC MODELS; ATMOSPHERIC TEMPERATURE; MIE SCATTERING; AEROSOLS; HAZE; ATMOSPHERIC COMPOSITION; ATMOSPHERIC SCATTERING; EXTINCTION; RAYLEIGH SCATTERING; HYDROCARBONS; PARTICLE SIZE DISTRIBUTION
|Calculation of kinetic rate constants from thermodynamic data - Marek, C. John, et al|
A new scheme for relating the absolute value for the kinetic rate constant k to the thermodynamic constant Kp is developed for gases. In this report the forward and reverse rate constants are individually related to the thermodynamic data. The kinetic rate constants computed from thermodynamics compare well with the current kinetic rate constants. This method is self consistent and does not have extensive rules...
Keywords: LASER OUTPUTS; SPECTRAL RESOLUTION; ULTRAVIOLET RADIATION; MERCURY VAPOR; PULSED LASERS; RAYLEIGH SCATTERING; TUNABLE LASERS; ULTRAVIOLET LASERS; CONTINUOUS RADIATION; HARMONIC GENERATORS; SPATIAL RESOLUTION
|Quantifying Grassland-to-Woodland Transitions and the Implications for Carbon and Nitrogen Dynamics in the Southwest United States - Wessman, Carol A.|
Replacement of grasslands and savannas by shrublands and woodlands has been widely reported in tropical, temperate and high-latitude rangelands worldwide (Archer 1994). These changes in vegetation structure may reflect historical shifts in climate and land use; and are likely to influence biodiversity, productivity, above- and below ground carbon and nitrogen sequestration and biophysical aspects of land surface-atmosphere interactions...
Keywords: AEROACOUSTICS; POWER SPECTRA; OPTICAL MEASUREMENT; JET AIRCRAFT NOISE; COMPUTATIONAL FLUID DYNAMICS; GAS FLOW; RAYLEIGH SCATTERING; DENSITY (MASS/VOLUME); TEMPERATURE MEASUREMENT; TURBULENCE; SUPERSONIC FLOW; SOUND PRESSURE
|SRB frustrum 'smiley' cracking phenomenon study - Cruse, Thomas A|
The thermal protection system installed on the SRB frustrums incurs the formation of debonds between the MSA-2 TPS material and the substrate. The debonds can lead to surface penetrating cracks, called 'smileys' near sealed fasteners and other surface discontinuities. The study concluded that the 'smileys' were caused as the result of stress risers caused by excess fastener sealant (PR-1422) and weakly bonded surfaces...
Keywords: GAS FLOW; LIGHT (VISIBLE RADIATION); SPECTRUM ANALYSIS; GAS TEMPERATURE; IMAGING TECHNIQUES; RAYLEIGH SCATTERING; TEMPERATURE MEASUREMENT; VELOCITY MEASUREMENT; AIR JETS; FABRY-PEROT INTERFEROMETERS; HYPERSONIC FLOW
|Shuttle Primary Reaction Control Subsystem Thruster Fuel Valve Pilot Seal Extrusion: A Failure Correlation - Waller, Jess|
Pilot operated valves (POVs) are used to control the flow of hypergolic propellants monomethylhydrazine (fuel) and nitrogen tetroxide (oxidizer) to the Shuttle orbiter Primary Reaction Control Subsystem (PRCS) thrusters. The POV incorporates a two-stage design: a solenoid-actuated pilot stage, which in turn controls a pressure-actuated main stage. Isolation of propellant supply from the thruster chamber is accomplished in part by a captive polytetrafluoroethylene (PTFE) pilot seal retained insid...
Keywords: NOISE (SOUND); MACH NUMBER; JET AIRCRAFT NOISE; RAYLEIGH SCATTERING; SOUND PRESSURE; NOISE GENERATORS; PRESSURE OSCILLATIONS; SUBSONIC FLOW; SHEAR LAYERS; NONINTRUSIVE MEASUREMENT
|THE TRELLIS COMPLEXITY OF CONVOLUTIONAL CODES - MCELIECE, R. J.|
IT HAS LONG BEEN KNOWN THAT CONVOLUTIONAL CODES HAVE A NATURAL, REGULAR TRELLIS STRUCTURE THAT FACILITATES THE IMPLEMENTATION OF VITERBI'S ALGORITHM. IT HAS GRADUALLY BECOME APPARENT THAT LINEAR BLOCK CODES ALSO HAVE A NATURAL, THOUGH NOT IN GENERAL A REGULAR, 'MINIMAL' TRELLIS STRUCTURE, WHICH ALLOWS THEM TO BE DECODED WITH A VITERBI-LIKE ALGORITHM. IN BOTH CASES, THE COMPLEXITY OF THE VITERBI DECODING ALGORITHM CAN BE ACCURATELY ESTIMATED BY THE NUMBER OF TRELLIS EDGES PER ENCODED BIT...
Keywords: FLOW MEASUREMENT; FABRY-PEROT INTERFEROMETERS; FLOW CHARACTERISTICS; FLOW VELOCITY; IMAGING TECHNIQUES; LASER OUTPUTS; LIGHT SCATTERING; RAYLEIGH SCATTERING; SUPERSONIC WIND TUNNELS; YAG LASERS; ABSORPTION SPECTRA; DOPPLER EFFECT
|Data Analysis of a Space Experiment: Common Software Tackles Uncommon Task - Wilkinson, R. Alle|
Presented here are the software adaptations developed by laboratory scientists to process the space experiment data products from three experiments on two International Microgravity Laboratory Missions (IML-1 and IML-2). The challenge was to accommodate interacting with many types of hardware and software developed by both European Space Agency (ESA) and NASA aerospace contractors, where data formats were neither commercial nor familiar to scientists...
Keywords: ATTITUDE INDICATORS; PERFORMANCE TESTS; SYSTEMS ENGINEERING; HARDWARE; COMPUTER PROGRAMS; SPACECRAFT EQUIPMENT; RAYLEIGH SCATTERING; SOLAR RADIATION; FLIGHT TESTS; DESIGN ANALYSIS; EQUIPMENT SPECIFICATIONS; RADIATIVE TRANSFER; SPACE SHUTTLE PAYLOADS; EARTH LIMB
|Solar cosmic rays - Dorman, L. I.|
Experimental data on solar cosmic rays obtained during 1942-1967 with the help of ground apparatus for continuous recording of cosmic rays (neutron monitors, ionization chambers, scintillation telescopes) is systematized and analyzed. Stratospheric data and the data gathered from satellite and rocket-borne instruments are also investigated. Problems of generation and propagation of solar cosmic rays, in particular, the question regarding the form of representation of energy spectrum of solar par...
Keywords: FAR ULTRAVIOLET RADIATION; POLARIZED RADIATION; WAVELENGTHS; FREON; MOLECULAR GASES; RAYLEIGH SCATTERING; SCATTERING CROSS SECTIONS; AIR POLLUTION; ATMOSPHERIC COMPOSITION; CHLOROFLUOROMETHANE; LASER APPLICATIONS
|Analysis of Spaceborne GPS Systems - Cosmo, Mario L.|
A reasonable amount of literature can be found on the general topic of GPS receiving antennas, but very little has been published on spaceborne GPS receiving antennas. This very new topic seems to be so far more of interest for the industrial world than for the academic community. For satellite applications, microstrip antennas are usually preferred over other types of antennas mainly because of their non-electrical characteristics, such as small size, relatively lightweight, shape, possibility ...
Keywords: SOLAR RADIATION; RAYLEIGH SCATTERING; PARAMETERIZATION; OZONE; MESOSCALE PHENOMENA; ANGULAR RESOLUTION; SOLAR HEATING; CLIMATE MODELS; ABSORPTION SPECTRA; WATER VAPOR; CARBON DIOXIDE; RADIATIVE TRANSFER; SPECTRAL BANDS; NEAR INFRARED RADIATION
|The Application of Jason-Measurements to Estimate the Global Near Surface Ocean Circulation for Climate Research - Niiler, Pearn P|
The scientific objective of this research program were to utilize drifter and satellite sea level data for the determination of time mean and time variable surface currents of the global ocean. To accomplish these tasks has required the processing of drifter data to include a wide variety of different configurations of drifters into a uniform format and to process the along track satellite altimeter data for computing the geostrophic current components normal to the track...
Keywords: EXCIMER LASERS; VORTICITY; INJECTORS; CHARGE COUPLED DEVICES; FLOW VISUALIZATION; FLOW DISTRIBUTION; HELIUM; RAYLEIGH SCATTERING; HYPERSONIC WIND TUNNELS; GAS MIXTURES; FLUORINE; ARGON LASERS; AIRSPEED; PRESSURE GRADIENTS
|US Experiments Flown on the Soviet Biosatellite Cosmos 2044 - NON|
Cosmos 2044 was launched on September 15, 1989, containing radiation dosimetry experiments and a biological payload including two young male rhesus monkeys, ten adult male Wistar rats, insects, amphibians, protozoa, cell cultures, worms, plants and fish. The biosatellite was launched from the Plesetsk Cosmodrome in the Soviet Union for a mission duration of 14 days, as planned. The major research objectives were: (1) Study adaptive response mechanisms of mammals during flight; (2) Study physiolo...
Keywords: RAYLEIGH SCATTERING; FLOW DISTRIBUTION; PULSED LASERS; WAKES; SHOCK WAVES; SHOCK FRONTS; LIGHT SCATTERING; DENSITY MEASUREMENT; HIGH TEMPERATURE; SUPERSONIC FLOW; SUPERSONIC WIND TUNNELS; FLOW MEASUREMENT; CCD CAMERAS; EXCIMER LASERS
|Adhesion testing of aircraft tires - Bobo, S. N|
Adhesion testing appeared to offer a less burdensome alternative to replace some of the dynamometer tests. Accordingly, test results and data were requested from retreaders who had used adhesion testing.
Keywords: FLOW DISTRIBUTION; MASS SPECTROSCOPY; NONEQUILIBRIUM FLOW; RAMAN SPECTRA; RAYLEIGH SCATTERING; REENTRY VEHICLES; SPACE SHUTTLES; CALIBRATING; FLUORESCENCE; LASER DOPPLER VELOCIMETERS; LASER INDUCED FLUORESCENCE
|Center for Advanced Space Propulsion Second Annual Technical Symposium Proceedings - NON|
The proceedings for the Center for Advanced Space Propulsion Second Annual Technical Symposium are divided as follows: Chemical Propulsion, CFD; Space Propulsion; Electric Propulsion; Artificial Intelligence; Low-G Fluid Management; and Rocket Engine Materials.
Keywords: FLOW DISTRIBUTION; IMAGING TECHNIQUES; RAYLEIGH SCATTERING; SUPERSONIC BOUNDARY LAYERS; THREE DIMENSIONAL FLOW; THREE DIMENSIONAL MODELS; BOUNDARY LAYERS; SHOCK WAVES; SUPERSONIC INLETS
|STRIPE: Remote Driving Using Limited Image Data - Kay, Jennifer S|
Driving a vehicle, either directly or remotely, is an inherently visual task. When heavy fog limits visibility, we reduce our car's speed to a slow crawl, even along very familiar roads. In teleoperation systems, an operator's view is limited to images provided by one or more cameras mounted on the remote vehicle. Traditional methods of vehicle teleoperation require that a real time stream of images is transmitted from the vehicle camera to the operator control station, and the operator steers t...
Keywords: SOOT; GAS JETS; LAMINAR FLOW; LOADS (FORCES); MORPHOLOGY; PARTICULATES; SHAPES; WEIGHTLESSNESS; DIFFUSION FLAMES; JET FLOW; RADIATIVE HEAT TRANSFER; PROPULSION SYSTEM PERFORMANCE; PROPULSION SYSTEM CONFIGURATIONS; RAYLEIGH SCATTERING; SCATTERING CROSS SECTIONS; FLAME PROPAGATION
|Preventing Damaging Pressure Gradients at the Walls of an Inflatable Space System - Scialdone, John J|
An inflatable structural system to deploy a space system such as a solar shield, an antenna or another similar instrument, requires a stiffening element after it is extended by the inflated gas pressure. The stiffening element has to be packaged in a folded configuration before the deployment. It must be relatively small, lightweight, non-damaging to the inflated system, and be able to become stiff in a short time...
Keywords: DENSITY (MASS/VOLUME); CONTINUOUS WAVE LASERS; DIAMETERS; ELECTROMAGNETIC RADIATION; FIBER OPTICS; FREQUENCY RANGES; PHOTOMULTIPLIER TUBES; PHOTONS; RAYLEIGH SCATTERING; VORTICES; AIR CONDITIONING; SUPERSONIC JET FLOW; CORRELATION; CROSS CORRELATION; FLOW CHARACTERISTICS; FLOW DISTRIBUTION; PRESSURE OSCILLATIONS; TURBULENT FLOW
|Dilution Jets in Accelerated Cross Flows - Lipshitz, Abraham|
Results of flow visualization experiments and measurements of the temperature field produced by a single jet and a row of dilution jets issued into a reverse flow combustor are presented. The flow in such combustors is typified by transverse and longitudinal acceleration during the passage through its bending section. The flow visualization experiments were designed to examine the separate effects of longitudinal and transverse acceleration on the jet trajectory and spreading rate...
Keywords: FLOW MEASUREMENT; AIRCRAFT NOISE; RAYLEIGH SCATTERING; QUADRUPOLES; RADIAL VELOCITY; SHEAR LAYERS; NOISE SPECTRA; NONINTRUSIVE MEASUREMENT; FLOW VELOCITY; SOUND PRESSURE; PRESSURE OSCILLATIONS; PLUMES; JET FLOW; HIGH SPEED; MACH NUMBER; AEROACOUSTICS
|Composite Overwrapped Pressure Vessels: Database Extension Task 3.0 and Impact Damage Effects Control Task 8.0 - Beeson, Harold D.|
This document represents efforts accomplished at the NASA Johnson Space Center White Sands Test Facility (WSTF) in support of the Enhanced Technology for Composite Overwrapped Pressure Vessels (COPV) Program, a joint research and technology effort among the U.S. Air Force, NASA, and the Aerospace Corporation. WSTF performed testing for several facets of the program. Testing that contributed to the Task 3.0 COPV database extension objective included baseline structural strength, failure mode and ...
Keywords: COMBUSTION PHYSICS; LIQUID FUELS; METHYL ALCOHOL; CIRCULATION; COMBUSTION PRODUCTS; LAMINAR FLOW; MATHEMATICAL MODELS; REACTION KINETICS; TEMPERATURE MEASUREMENT; TURBULENT JETS; NITROGEN; FLAMES; HYDROGEN; JET FLOW; LASER INDUCED FLUORESCENCE; RAMAN SPECTRA; RAYLEIGH SCATTERING; FUEL SPRAYS; COMBUSTION CHAMBERS; BURNERS; NUMERICAL ANALYSIS
|Workshop on NPOESS Ozone Measurements Requirements - NON|
A workshop on the National Polar-orbiting Operational Satellite System (NPOESS) ozone measurements requirements was held August 30-31, 1995, at the NOAA Science Center, Camp Springs, Maryland. The workshop was sponsored by the Office of Research and Applications of the National Environmental Satellite, Data, and Information Service as part of an internal concept study (ICS) for the Integrated Program Office (IPO)...
Keywords: RESEARCH PROJECTS; RAYLEIGH SCATTERING; RAMAN SPECTRA; INTERNATIONAL COOPERATION; ATMOSPHERIC TEMPERATURE; AEROSOLS; ATMOSPHERIC COMPOSITION; TEMPERATURE DISTRIBUTION; VERTICAL DISTRIBUTION; LONG TERM EFFECTS; CHANGE DETECTION; STRATOSPHERE; REMOTE SENSING; DIFFERENTIAL ABSORPTION LIDAR; GROUND STATIONS; GLOBAL TRACKING NETWORK; RADAR NETWORKS; BACKSCATTERING
|MIT OCW - RES.6-006|
This resource contains demonstrations used to illustrate the theory and applications of lasers and optics. Lasers today are being used in an ever-increasing number of applications. In fact, there is hardly a field that has not been touched by the laser. Lasers are playing key roles in the home, office, hospital, factory, outdoors, and theater, as well as in the laboratory.
Keywords: lasers; optics; demonstrations; linear polarizer; polarization rotation; optical isolator; light; dielectric; scattering; Rayleigh scattering; reflection; glass-air boundary; air-glass boundary; Brewster's angle; total internal reflection; phase shifts; interference; fringe contrast; coherence; plane mirror cavity; curved mirror cavity; Fraunhofer diffraction; Fresnel diffraction; single slit; double-slit; multiple slit; optical fiber; light amplifier; argon laser